The Micrologic 7.0 AP LED lights up. What caused the journey of self-protection?

Ap light indicates internal fault of the control unit, or the temperature of the control unit is higher than 120℃, and it can be stopped for a period of time. If the temperature drops, it can be operated, indicating that it is an overtemperature fault. Otherwise, the control unit needs to be replaced. For the P-type control unit, in addition to the above reasons, the additional protection function besides the basic current protection will also cause the Ap lamp to light up. At this time, it is necessary to enter the fault history and carefully find the cause of the fault. I hope I can help you!